[Ipopt] mumps out of memory

[Saqib Ilyas]

Andreas
Thanks for the prompt reply. Sorry about the typo, I had actually tried
"mumps_mem_percent"
I am using IPopt3.8.0 on Windows and it says: Unknown keyword
"mums_mem_percent"

On Wed, Jul 21, 2010 at 1:44 AM, Andreas Waechter
<andreasw at watson.ibm.com>wrote:

> Hi
>
>
> I tried to fiddle with the alleged "mump_mem_percent option" but ipopt came
>> back to me saying that was not a recognized option.
>>
>
> Try "mumps_mem_percent" with an "s" before the first underscore.
>
> Regards,
>
> Andreas
>
>
> On Tue, 20 Jul 2010, Saqib Ilyas wrote:
>
> Hi all
>> I download the Windows binary for IpOpt. I didn't have enough time to
>> compile from source or to download and compile not-included solvers. I
>> have
>> an AMPL model that, when I try to solve with IpOpt, it gives the following
>> error. Any clues what is going on? I have 2 GB RAM on a Windows XP
>> machine.
>> I tried to fiddle with the alleged "mump_mem_percent option" but ipopt
>> came
>> back to me saying that was not a recognized option. Error dump follows:
>>
>>
>> ******************************************************************************
>> This program contains Ipopt, a library for large-scale nonlinear
>> optimization.
>> Ipopt is released as open source code under the Common Public License
>> (CPL).
>>        For more information visit http://projects.coin-or.org/Ipopt
>>
>> ******************************************************************************
>> NOTE: You are using Ipopt by default with the MUMPS linear solver.
>>     Other linear solvers might be more efficient (see Ipopt
>> documentation).
>>
>> This is Ipopt version 3.8.0, running with linear solver mumps.
>> Number of nonzeros in equality constraint Jacobian...:        0
>> Number of nonzeros in inequality constraint Jacobian.:    30888
>> Number of nonzeros in Lagrangian Hessian.............:   617760
>> MUMPS returned INFO(1) =-13 - out or memory.
>> In some cases it helps to decrease the value of the option
>> "mumps_mem_percent".
>> Total number of variables............................:    32175
>>                    variables with only lower bounds:        0
>>               variables with lower and upper bounds:    32175
>>                    variables with only upper bounds:        0
>> Total number of equality constraints.................:        0
>> Total number of inequality constraints...............:      936
>>       inequality constraints with only lower bounds:        0
>>  inequality constraints with lower and upper bounds:        0
>>       inequality constraints with only upper bounds:      936
>> iter    objective    inf_pr   inf_du lg(mu)  ||d||  lg(rg) alpha_du
>> alpha_pr  ls
>>  0 2.7042410e+002 0.00e+000 1.46e+001  -1.0 0.00e+000    -  0.00e+000
>> 0.00e+00
>> 0   0
>> MUMPS returned INFO(1) =-13 - out or memory.
>> In some cases it helps to decrease the value of the option
>> "mumps_mem_percent".
>> WARNING: Problem in step computation; switching to emergency mode.
>> Restoration phase is called at point that is almost feasible,
>>  with constraint violation 0.000000e+000. Abort.
>> Number of Iterations....: 0
>>                                  (scaled)                 (unscaled)
>> Objective...............:  2.7042410056253124e+002
>> 2.7042410056253124e+002
>> Dual infeasibility......:  1.4603015700000002e+001
>> 1.4603015700000002e+001
>> Constraint violation....:  0.0000000000000000e+000
>> 0.0000000000000000e+000
>> Complementarity.........:  9.9000001999999998e-001
>> 9.9000001999999998e-001
>> Overall NLP error.......:  1.4603015700000002e+001
>> 1.4603015700000002e+001
>>
>> Number of objective function evaluations             = 1
>> Number of objective gradient evaluations             = 1
>> Number of equality constraint evaluations            = 0
>> Number of inequality constraint evaluations          = 1
>> Number of equality constraint Jacobian evaluations   = 0
>> Number of inequality constraint Jacobian evaluations = 1
>> Number of Lagrangian Hessian evaluations             = 1
>> Total CPU secs in IPOPT (w/o function evaluations)   =      0.828
>> Total CPU secs in NLP function evaluations           =      0.172
>> EXIT: Restoration Failed!
>> Ipopt 3.8.0: Restoration Phase Failed.
>> suffix ipopt_zU_out OUT;
>> suffix ipopt_zL_out OUT;
>> ampl:
>>
>>
>> --
>> Muhammad Saqib Ilyas
>> PhD Student, Computer Science and Engineering
>> Lahore University of Management Sciences
>>
>>


-- 
Muhammad Saqib Ilyas
PhD Student, Computer Science and Engineering
Lahore University of Management Sciences
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